polls, president obama is hammering the message to voters that mitt romney wants to rse your taxes. obama likes to cite a study by princeton economist harvey rosen. rosen says the company -- the president misrepresented. what is the truth? professor harvey rosen joins us to explain. thank you for being with us. appreciate your time. the president is saying that you say romney's tax plan we will end up raising taxes on middle-class. is that what you said? >> thas absolutely not what i said. what i said is that he can cut rates on the very highest income taxpayers and get rid of looples and tax preferences, he can make up enough money for those people at the high end to not end up paying more, don't end up paying less. if they don't have to pay less than the people below them don't have to pay more. that's what i showed. mathematically possible for the romney plan to work. i did not show or claim that middle-class people would have to pay more. there is nothing in my aper that states at. nothing in my paper that implies that, nothing in the numbers that would support that conclusion.